ABAP Select data from SAP table ISSR_TP_MWDATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISSR_TP_MWDATA table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ISSR_TP_MWDATA. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ISSR_TP_MWDATA table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ISSR_TP_MWDATA TYPE STANDARD TABLE OF ISSR_TP_MWDATA,
      WA_ISSR_TP_MWDATA TYPE ISSR_TP_MWDATA,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ISSR_TP_MWDATA> TYPE ISSR_TP_MWDATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISSR_TP_MWDATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISSR_TP_MWDATA
  INTO TABLE IT_ISSR_TP_MWDATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISSR_TP_MWDATA
*  INTO TABLE @DATA(IT_ISSR_TP_MWDATA2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ISSR_TP_MWDATA INDEX 1 INTO DATA(WA_ISSR_TP_MWDATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISSR_TP_MWDATA ASSIGNING <ISSR_TP_MWDATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISSR_TP_MWDATA>-CLNT = 1.
<ISSR_TP_MWDATA>-LDNR = 1.
<ISSR_TP_MWDATA>-RCTY = 1.
<ISSR_TP_MWDATA>-VERS = 1.
<ISSR_TP_MWDATA>-BYEAR = 1.

ENDLOOP.

LOOP AT IT_ISSR_TP_MWDATA INTO WA_ISSR_TP_MWDATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISSR_TP_MWDATA-TCUR, sy-vline,
  WA_ISSR_TP_MWDATA-RPMAX, sy-vline,
  WA_ISSR_TP_MWDATA-BUKRS, sy-vline,
  WA_ISSR_TP_MWDATA-COUNTRY, sy-vline,
  WA_ISSR_TP_MWDATA-COUNTRY_VAR, sy-vline,
  WA_ISSR_TP_MWDATA-VAL_AREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISSR_TP_MWDATA you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ISSR_TP_MWDATA TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ISSR_TP_MWDATA INTO WA_ISSR_TP_MWDATA.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field LDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-LDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-LDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-VERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-VERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-BYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-BYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ASSET_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-ASSET_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-ASSET_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-PARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VVKEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISSR_TP_MWDATA-VVKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISSR_TP_MWDATA-VVKEY.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ISSR_TP_MWDATA_STR, 
CLNT TYPE STRING,
LDNR TYPE STRING,
RCTY TYPE STRING,
VERS TYPE STRING,
BYEAR TYPE STRING,
TCUR TYPE STRING,
RPMAX TYPE STRING,
BUKRS TYPE STRING,
COUNTRY TYPE STRING,
COUNTRY_VAR TYPE STRING,
VAL_AREA TYPE STRING,
SPARTE TYPE STRING,
STOCKBAV TYPE STRING,
STOCKFA TYPE STRING,
DV TYPE STRING,
DVUA TYPE STRING,
RANTYP TYPE STRING,
ASSET_NR TYPE STRING,
PARTNER TYPE STRING,
SEC_ACCOUNT TYPE STRING,
PORTFOLIO TYPE STRING,
ACCOUNT_GRP TYPE STRING,
PRODUCT_CATEGORY TYPE STRING,
PRODUCT_TYPE TYPE STRING,
FLOWTYPE TYPE STRING,
ABS54AVAG TYPE STRING,
NW101 TYPE STRING,
NW600 TYPE STRING,
NW102 TYPE STRING,
NW201 TYPE STRING,
NW670 TYPE STRING,
NW671 TYPE STRING,
R59710_1 TYPE STRING,
R59710_2 TYPE STRING,
R59710_3 TYPE STRING,
R59710_4 TYPE STRING,
BUDAT TYPE STRING,
ECOMPONENT TYPE STRING,
EPGM TYPE STRING,
ENAME TYPE STRING,
EDATUM TYPE STRING,
ETIME TYPE STRING,
IDENTNR TYPE STRING,
IDENTNRH TYPE STRING,
BEDECKWHR TYPE STRING,
R59703 TYPE STRING,
R59704 TYPE STRING,
R59705 TYPE STRING,
R59706 TYPE STRING,
R59708 TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
ANRWERTAKTZ TYPE STRING,
ANRWERTDAT TYPE STRING,
ANRWERT TYPE STRING,
ANRWERTWHR TYPE STRING,
GENDAT TYPE STRING,
GENAKTZ TYPE STRING,
AUFBLAND TYPE STRING,
AUFBWORT TYPE STRING,
VVKEY TYPE STRING,
FLG_SECONDARY TYPE STRING,
DURCHR_FONDS TYPE STRING,
FLG_INVESTMENT TYPE STRING,
ASSET_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISSR_TP_MWDATA_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ISSR_TP_MWDATA_STR-CLNT sy-vline 
WA_ISSR_TP_MWDATA_STR-LDNR sy-vline 
WA_ISSR_TP_MWDATA_STR-RCTY sy-vline 
WA_ISSR_TP_MWDATA_STR-VERS sy-vline 
WA_ISSR_TP_MWDATA_STR-BYEAR sy-vline 
WA_ISSR_TP_MWDATA_STR-TCUR sy-vline 
WA_ISSR_TP_MWDATA_STR-RPMAX sy-vline 
WA_ISSR_TP_MWDATA_STR-BUKRS sy-vline 
WA_ISSR_TP_MWDATA_STR-COUNTRY sy-vline 
WA_ISSR_TP_MWDATA_STR-COUNTRY_VAR sy-vline 
WA_ISSR_TP_MWDATA_STR-VAL_AREA sy-vline 
WA_ISSR_TP_MWDATA_STR-SPARTE sy-vline 
WA_ISSR_TP_MWDATA_STR-STOCKBAV sy-vline 
WA_ISSR_TP_MWDATA_STR-STOCKFA sy-vline 
WA_ISSR_TP_MWDATA_STR-DV sy-vline 
WA_ISSR_TP_MWDATA_STR-DVUA sy-vline 
WA_ISSR_TP_MWDATA_STR-RANTYP sy-vline 
WA_ISSR_TP_MWDATA_STR-ASSET_NR sy-vline 
WA_ISSR_TP_MWDATA_STR-PARTNER sy-vline 
WA_ISSR_TP_MWDATA_STR-SEC_ACCOUNT sy-vline 
WA_ISSR_TP_MWDATA_STR-PORTFOLIO sy-vline 
WA_ISSR_TP_MWDATA_STR-ACCOUNT_GRP sy-vline 
WA_ISSR_TP_MWDATA_STR-PRODUCT_CATEGORY sy-vline 
WA_ISSR_TP_MWDATA_STR-PRODUCT_TYPE sy-vline 
WA_ISSR_TP_MWDATA_STR-FLOWTYPE sy-vline 
WA_ISSR_TP_MWDATA_STR-ABS54AVAG sy-vline 
WA_ISSR_TP_MWDATA_STR-NW101 sy-vline 
WA_ISSR_TP_MWDATA_STR-NW600 sy-vline 
WA_ISSR_TP_MWDATA_STR-NW102 sy-vline 
WA_ISSR_TP_MWDATA_STR-NW201 sy-vline 
WA_ISSR_TP_MWDATA_STR-NW670 sy-vline 
WA_ISSR_TP_MWDATA_STR-NW671 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59710_1 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59710_2 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59710_3 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59710_4 sy-vline 
WA_ISSR_TP_MWDATA_STR-BUDAT sy-vline 
WA_ISSR_TP_MWDATA_STR-ECOMPONENT sy-vline 
WA_ISSR_TP_MWDATA_STR-EPGM sy-vline 
WA_ISSR_TP_MWDATA_STR-ENAME sy-vline 
WA_ISSR_TP_MWDATA_STR-EDATUM sy-vline 
WA_ISSR_TP_MWDATA_STR-ETIME sy-vline 
WA_ISSR_TP_MWDATA_STR-IDENTNR sy-vline 
WA_ISSR_TP_MWDATA_STR-IDENTNRH sy-vline 
WA_ISSR_TP_MWDATA_STR-BEDECKWHR sy-vline 
WA_ISSR_TP_MWDATA_STR-R59703 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59704 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59705 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59706 sy-vline 
WA_ISSR_TP_MWDATA_STR-R59708 sy-vline 
WA_ISSR_TP_MWDATA_STR-ANLN1 sy-vline 
WA_ISSR_TP_MWDATA_STR-ANLN2 sy-vline 
WA_ISSR_TP_MWDATA_STR-ANRWERTAKTZ sy-vline 
WA_ISSR_TP_MWDATA_STR-ANRWERTDAT sy-vline 
WA_ISSR_TP_MWDATA_STR-ANRWERT sy-vline 
WA_ISSR_TP_MWDATA_STR-ANRWERTWHR sy-vline 
WA_ISSR_TP_MWDATA_STR-GENDAT sy-vline 
WA_ISSR_TP_MWDATA_STR-GENAKTZ sy-vline 
WA_ISSR_TP_MWDATA_STR-AUFBLAND sy-vline 
WA_ISSR_TP_MWDATA_STR-AUFBWORT sy-vline 
WA_ISSR_TP_MWDATA_STR-VVKEY sy-vline 
WA_ISSR_TP_MWDATA_STR-FLG_SECONDARY sy-vline 
WA_ISSR_TP_MWDATA_STR-DURCHR_FONDS sy-vline 
WA_ISSR_TP_MWDATA_STR-FLG_INVESTMENT sy-vline 
WA_ISSR_TP_MWDATA_STR-ASSET_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.